Page 80 of 873

10MAINTENANCE
18
MAINTENANCE
ABS VEHICLES - CHECK ROAD WHEEL SPEED
SENSOR ELECTRICAL HARNESS FOR DAMAGE
RENEW OXYGEN SENSORS
See EMISSION CONTROL, Repair, Heated
Oxygen Sensor (HO2S)
RENEW CATALYTIC CONVERTERS
See MANIFOLD AND EXHAUST SYSTEM, Repair,
Exhaust System Complete
REPORT ANY UNUSUAL FEATURES OF VEHICLE
CONDITION AND ADDITIONAL WORK REQUIREDCARRY OUT ROAD TEST
For details of dynamometer testing.See
INTRODUCTION, Information, Dynamometer
Testing - Non Anti-lock brake vehicles See
INTRODUCTION, Information, Dynamometer
Testing - Vehicles with Anti-lock brakes (ABS)
Check following items:
1.Inhibitor switch only operates in P and N.
2.Engine for excessive noise.
3.Clutch for slip, judder or spin.
4.Automatic gear selection/shift speeds.
5.Gear selection/noise - high/low range.
6.Steering for abnormal noise/effort.
7.Steering for free play.
8.All instruments, gauges and warning indicators.
9.Heater and air conditioning systems.
10.Heated rear screen.
11.Shock absorbers - ride irregularities.
12.Foot brake, on emergency stop, pulling to one
side, binding, pedal effort.
13.Parkbrake efficiency.
14.Seat reclining and latching.
15.Fully extend seat belt, check operation of
retraction and latching. Inertia belts lock when
snatched or vehicle on slope.
16.Road wheel balance.
17.Transmission for vibrations.
18.Body noises, squeaks and rattles.
19.Excessive exhaust smoke.
20.Engine idle speed.
21.Endorse service record.
22.Report any unusual features of vehicle condition
and additional work required.
ENDORSE SERVICE RECORD
Page 82 of 873

Tdi
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REPAIR DRIVE BELT INFORMATION
A single 'serpentine drive belt' drives all the
ancilliaries bar the air conditioning compressor, which
has a separate drive belt. It is essential that the belts
are fitted exactly as shown. It should also be noted
that the water pump/viscous fan is driven in a
clockwise direction.
A drive belt tensioner automatically tensions the drive
belt, eliminating the need for tensioning individual
drive belts. Turning the tensioner pulley in a clockwise
direction will release drive belt tension.
Under normal highway use the belt must be changed
at 160,000 kilometres, 96,000 miles or eight years
whichever occurs first.
The drive belt must be examined at every service and
replaced if necessary.Off road driving
Regular examination of the drive belt is essential if the
vehicle is used off road. The vehicle driver should be
requested to identify the type of mileage the vehicle
has covered.
After every off road session the owner should inspect
the belt for cuts and possible damage caused by
stones. If belt has jumped, reposition belt correctly. A
new belt must be fitted at the next service or before,
dependant on the type of damage sustained.
Fan cowl
To ensure easy access to the drive belt the top portion
of the fan cowl is detachable.
Check condition
Check condition of drive belt. Renew a belt that shows
signs of wear, splitting or oil contamination.
Page 85 of 873

12ENGINE
4
REPAIR 22.Disconnect feed pipe and spill return pipe from
injector pump.
23.Disconnect both pipes from fuel lift pump.
24.Disconnect servo hose from vacuum pump.
25.Remove three retaining nuts and disconnect
exhaust down pipe.
26.Remove oil cooler pipes from oil filter adaptor.
27.If automatic transmission is fitted, disconnect
feed and return pipes at gearbox oil cooler.
Remove retaining bracket from LH side of
cylinder block and release both oil cooler pipes.
28.Support gearbox.
29.Disconnect ground strap from starter motor.
30.On vehicles with automatic transmission, remove
fixings and detach drive plate housing access
panel and gasket.31.Working through drive plate housing aperture
mark the torque convertor and drive plate to
facilitate reassembly.
32.Remove the four convertor to flexible drive
securing bolts, rotating crankshaft to gain access
to each individual bolt.
33.Fit engine lifting bracket to the two RH rear
cylinder head fixing bolts.
34.Using suitable hoist, fit lifting chains to engine.
35.Remove four bolts, from both sides, securing
front engine mounting brackets to cylinder block.
36.Remove two bolts, from both sides, securing
front engine mounting bracket to bell housing.
Page 86 of 873

Tdi
5
REPAIR
37.Remove nuts and plain washers securing front
engine mountings to chassis,and lift both engine
mounting bracket assemblies from vehicle.
38.Remove engine to bell housing fixings. Leave
starter motor attached.
39.Raise engine to separate from transmission.
40.Check all connections to engine have been
disconnected.
41.Remove engine.Refit
42.Apply Hylomar to mating faces of bell housing.
Lubricate splines of gearbox primary pinion with
Rocol MV 3.
If automatic transmission, coat the four drive
plate to torque convertor bolts with Loctite 290.
Tighten to
39 Nm.
43.Lower engine and locate with transmission.
If manual transmission locate primary pinion into
clutch and engage bell housing dowels. Fit
engine to bell housing fixings. Tighten to
40 Nm.
If automatic transmission fixings. Tighten to46
Nm.
44.Raise engine, refit front engine mounting
brackets to cylinder block and bell housing.
45.Remove gearbox support and lower engine.
46.Tighten front engine mountings to chassis
fixings. Tighten to
45 Nm.
47.Reverse removal procedure. 1 to 37.
Page 91 of 873
12ENGINE
10
REPAIR
21.With lip side leading, drive-in seal squarely using
special tool LRT-12-082.
22.Refit gear.
FUEL INJECTION PUMP GEAR
Service repair no - 19.30.06
Remove
23.Slacken the three bolts on front of gear.
CAUTION: It is important to ensure that
when the injection pump is locked no
attempt must be made to rotate it. Take
care not to allow the crankshaft to be turned.24.Remove special tool pin from gear.
25.Remove three bolts and withdraw plate and
gear.
Refit
26.Fit gear and plate and secure with three bolts.
27.Insert pin from special tool LRT-12-045 in
injection pump gear and through into pump
flange.
Page 92 of 873

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11
REPAIR Timing belt fitting and tensioning
NOTE: It is important that belt tensioning
is carried out carefully and accurately. The
following procedure involves tensioning
the belt twice to ensure that it is equally tensioned
between each gear. New and original belts are
tensioned to different figures.
28.Ensure timing marks are correctly aligned, pin
from special tool LRT-12-045 is correctly
inserted in injection pump gear and timing tool
LRT-12-044 (LRT-12-085 if EDC) is fitted to
flywheel housing with pin located in flywheel slot.
Or if automatic: Timing tool LRT-12-044 is fitted
to engine backplate and pin located in ring gear.
29.Fit belt observing rotational marks made during
removal. Feed belt over gears keeping it tight on
drive side.
30.Fit idler pulley.
31.Slacken injection pump gear retaining bolts.
32.Adjust belt to correctly sit in gears.
33.Slacken belt tensioner securing bolt to finger
tight.
34.Insert 13 mm square drive extension bar in
tensioner plate.
NOTE: Belt tensioning should be carried
out using a dial type torque meter having a
range not exceeding
60 Nm.The torque
meter should be used in the almost vertical
position.
35.Apply a tension of
14 to 16 Nmfor a new belt or
11 to 13 Nmfor an original belt. When tension
is correct tighten clamp bolt.
36.Tighten injection pump gear bolts.
37.Remove pin from injection pump gear.
38.Disengage timing pin from timing slot in flywheel
or ring gear.
39.Rotate crankshaft one and three quarter turns in
a clockwise direction; then continue rotation until
timing pin in timing tool can be engaged with slot
in flywheel or ring gear.
40.Disengage timing pin.
41.Insert pin from special tool LRT-12-045 in
injection pump gear and through into pump
flange.
42.Slacken injection pump gear retaining bolts.
43.Slacken tensioner and retension belt.
44.Tighten injection pump gear retaining bolts.
45.Remove pin from injection pump gear.
46.Remove timing tool and refit plug.
47.Fit front cover plate using new gaskets.
See
Front Cover Plate
Page 93 of 873

12ENGINE
12
REPAIR FRONT COVER/TIMING GEAR HOUSING GASKET
Service repair no - 12.65.10
Remove
1.Remove timing belt and gears.
See Camshaft
Drive Belt and Gears
2.Remove fuel injection pump.See FUEL
SYSTEM, Repair, Fuel Injection Pump and
Timing
3.Remove engine oil sump.See Oil Sump
4.Remove oil pick up strainer.See Oil Pick-Up
Strainer
5.Remove bolts securing timing gear housing to
block.
6.Withdraw timing gear housing complete with
gasket.
7.Clean all gasket material from mating faces.
Refit
8.Fit slave guide studs to locate gasket.
9.Fit new gasket, over slave studs, to cylinder
block.
10.Align flats on oil pump with flats on crankshaft.
11.Fit front cover to block taking care not to damage
oil seal.
12.Secure with bolts of correct length in locations
where slave studs are not fitted (ST3482).
13.Remove slave studs and fit correct length bolts.
14.Tighten to
25 Nm.
15.Fit oil pick-up strainer.See Oil Pick-Up
Strainer
16.Fit oil sump.See Oil Sump
17.Refit fuel injection pump.See FUEL SYSTEM,
Repair, Fuel Injection Pump and Timing
Page 94 of 873

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13
REPAIR OIL SUMP
Service repair no - 12.60.44
Remove
1.Disconnect battery negative lead.
2.Drain engine oil.
3.Slacken sump securing bolts and, using a sharp
knife, break sealant around sump flange.
4.Remove bolts and withdraw sump.
Refit
5.Clean mating faces of sump, timing gear housing
and cylinder block.
6.Apply a 2,0 mm bead of 'Hylosil RTV102' to the
sump flange, ensuring bead is applied inboard of
the bolt holes.
7.Secure sump to block with bolts. Tighten to
25
Nm.
8.Refill engine oil.See LUBRICANTS, FLUIDS
AND CAPACITIES, Information,
Recommended Lubricants and Fluids
9.Reconnect battery negative lead.OIL PICK-UP STRAINER
Service repair no - 12.60.20
Remove
1.Disconnect battery negative lead.
2.Drain engine oil.
3.Remove engine oil sump.
See Oil Sump
4.Remove bolts securing pipe support bracket.
5.Remove bolts from pipe flanges.
6.Withdraw pick-up strainer assembly.
Refit
7.Refit pick-up strainer assembly, fitting a new 'O'
ring seal at oil pump connection.
8.Apply Loctite 242E to the two screws at the
bearing cap. Tighten to
9 Nm.
9.Fit bolts to pipe flanges. Tighten to25 Nm.
10.Refit engine oil sump.See Oil Sump
11.Reconnect battery negative lead.